FILE PHOTO: A worker conducts quality-check of a solar module product at a factory of a monocrystalline silicon solar equipment manufacturer LONGi Green Technology Co, in Xian, Shaanxi province, China December 10, 2019. REUTERS/Muyu Xu
FILE PHOTO: A worker conducts quality-check of a solar module product at a factory of a monocrystalline silicon solar equipment manufacturer LONGi Green Technology Co, in Xian, Shaanxi province, China December 10, 2019. REUTERS/Muyu Xu